Hello Robert, Yes, you are right that it will conflict with PIC 8259. But actually it won't. For, CPU intercept the special open sequence and will not forward out to chipset. That 8259 in the chipset will never have the chance been programmed. Only actual 8259 instruction will released outward for chipset. All the BIOS do like this, and they never had a problem.
Benji -----Original Message----- From: Robert Schwebel [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 18, 2001 10:30 AM To: [EMAIL PROTECTED] Subject: ioports on SC410 Hi! I'm running Linux (2.4.9) on an AMD SC410 embedded machine. As this processor has the Chip Setup and Control Index Register at 0x0022 and the Chip Setup and Control Data Register at 0x0023 there seems to be a collision with the first 8259A, as it requests the region from 0x0020 to 0x003f: / # cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0300-030f : eth0 03f8-03ff : serial(auto) As far as I know the PIC does only use 0x0020 and 0x0021, doesn't it? Why does the kernel request the whole region and what could be done against it? Is anybody else with this problem out there? Robert -- +--------------------------------------------------------+ | Dipl.-Ing. Robert Schwebel | | Linux Solutions for Science and Industry | | Braunschweiger Straße 79, 31134 Hildesheim, Germany | | Phone: +49-5121-28619-0 Fax: +49-5121-28619-4 | +--------------------------------------------------------+ -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>. -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>. -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>.
